Pupil Dilation Linked to Working Memory Capacity

Summary: Researchers discovered that pupil dilation can indicate levels of working memory. In a study, researchers observed that individuals whose pupils dilated more while performing memory tasks tended to have better working memory.

This relationship between pupil dilation and memory performance suggests that pupil metrics could potentially serve as non-invasive indicators of cognitive load and memory capacity. The study involved 179 undergraduate students who performed various working memory tasks while their pupil responses were monitored.

Working memory is one of the brain’s executive functions, a skill that allows humans to process information without losing track of what they’re doing.

In the short term, working memory allows the brain to complete an immediate task, like loading the dishwasher. Long-term, it helps the brain decide what to store for future use, such as whether more dishwasher soap will be needed.

University of Texas at Arlington researchers know that working memory varies greatly among individuals, but they aren’t sure exactly why.

Leave a Comment